GOLDEN VALLEY, Minn. -- The Minnesota Department of Transportation is looking for 500 people to test technology that could someday be used to collect a mileage-based user fee. Mn/DOT anticipates a fee on road usage might someday be necessary as more fuel efficient and hybrid cars are on the road, decreasing revenue from the gas tax. "This research will provide important feedback from motorists about the effectiveness of using technology in a car or truck to gather mileage information," said Cory Johnson, project manager. "We are researching alternative financing methods today that could be used 10 or 20 years from...